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12212121202111 = 29718075864437
BaseRepresentation
bin1011000110110101101100…
…1001010110110110111111
31121020110121201112122200101
42301231123021112312333
53100040411011431421
641550100535341531
72400203514332125
oct261553311266677
947213551478611
1012212121202111
11398914a05a606
12145295a8218a7
136a77a0ccb6ac
143030d982b915
151629ea5a7191
hexb1b5b256dbf

12212121202111 has 8 divisors (see below), whose sum is σ = 12633406917120. Its totient is φ = 11790847359648.

The previous prime is 12212121202093. The next prime is 12212121202117. The reversal of 12212121202111 is 11120212121221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12212121202111 - 223 = 12212112813503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212121202117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849816 + ... + 5014621.

It is an arithmetic number, because the mean of its divisors is an integer number (1579175864640).

Almost surely, 212212121202111 is an apocalyptic number.

12212121202111 is a deficient number, since it is larger than the sum of its proper divisors (421285715009).

12212121202111 is an equidigital number, since it uses as much as digits as its factorization.

12212121202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936273.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12212121202111 its reverse (11120212121221), we get a palindrome (23332333323332).

The spelling of 12212121202111 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-one million, two hundred two thousand, one hundred eleven".

Divisors: 1 29 71807 2082403 5864437 170068673 421107627659 12212121202111